Preheat oven to 325F. Melt butter in a double boiler or a small saucepan over low heat. Pour butter into a mixing bowl and then using same pan, melt chocolate on low heat.
Add sugar to the melted butter and mix well. Add eggs one at a time, beating by hand between each addition. Add vanilla and melted chocolate.
Sift flour with baking powder and salt. Add flour mixture to chocolate mixture. Stir in strawberries and M&M's® Strawberry candies. Pour batter into a greased 13 x 9 pan.
Bake for 35-45 minutes, or until a toothpick inserted in the center comes out clean. Cool completely before cutting into squares.
Recipe by In Good Taste at https://ingoodtaste.kitchen/chocolate-strawberry-brownies/